I know, I use the spritesheets to actually do an animation, no worries^^
And yes, I have the scale set to 4 since I want that pixelated effect.
Exporting a sprite sheet is still not as good quality-wise. I tried GIF as well.
Using the black background sadly is no option for me since my horrible engine I have to use for school doesn't support any kind of image manipulation aside scaling and rotating. It does fix the issue (sometimes), but I can't make any use out of it.